Of boston



(No Model.)

B; HALL.

, GORRUGATING MAGHINB.

No. 505,600', Patented Sept. 26, 1893.

i \w m mnu WITNESSEE UNiTED STATES PATENT Ormea,

BIOKNELL HALL, TAUNTON, ASSIGNOR TO THE WAINVRIGHT MANUFAC- TURING COMPANY OF MASSACHUSETTS, OF BOSTON, MASSACHUSETTS.

CORRUGATlNG-IVIACHINE.

SPECIFICATION forming part of `Letters Patent No. 505,600, dated September 26, 1893. Application Jtiled October 29, 1891- Serial No. 410.255. (No model.)

To all whom it may concern:

Be it known that I, BICKNELL HALL, of Taunton, in the county of Bristol and State of Massachusetts, have invented certain new and useful Improvements in Oorrugating-Machines, of which the following is a specification.

My invention relates to the class of corrugating machines shownin Letters Patent of the United States No. 434,060, granted Auxrust 12, 1890, to Hanson and Wainwright. ."hat patent shows a machine for forming provision is madefor forming corrugations of Vother form than the spiral corrugations shown and described therein.

The object of my invention is to provide a tions, or separate and distinct parallel annuzo lar corrugations in the tube, and I provide a corrugating tool consisting of a cylinder of steelor other suitable material, in which is formed a spiral corrugation to form a spiral rib of uniform diameter extending two or more times around the surface of the cylinder, and I adjust the tool or cylinder to cause the axis of the spirals to assume different angles relatively to the axis of the tube to be corrugated. When in a certain positiona spiral corrugation will be formed in the tube, when in another position, parallel independent, annular corrugations will be formed.

In the accompanying drawings illustrating my invention, Figure 1 is a plan view of a 3 5 portion of a corrugating machine embodying my improvements. Fig.` 2 is a View partly in end elevation and partly in section of the same, on the line X-X, of Fig. 1. Fig. 3 is a transverse section on the line y-y of Fig. 4o 2. Fig. 4 is a detail view showing a portion of a tube spirally corrugated and a corrugating tool arranged in position for forming a spiral corrugation. Fig. 5 is a similar View of a tube formed with parallel independent annular corrugations, and a tool set to form such corrugations.

The carriage bed B, is provided with a groove at each end O, and with friction rolls c, which run on the ways A. The carriage 5o shown in the drawings is adapted to employ three tools, each corrugating its own piece of spiral corrugations in metal tubes, but no' machine for forming either spiral corruga-` tubing E, and for this purpose the bed isprovided with sleeves D, which set into the bed of the carriage and which are slotted on one side sufliciently'to allow the tool to project 55 inwardly in the manner indicated in Figs. 2 and 3. The sleeve keeps the tube true while it is being corrugated, and it has a flange d at one end, its other end being threaded. and provided with a nut d. Any suitable means 6o may be employed for rotating the tubes.

The carriage cover is made in two parts F and G, which are secured together by screws, as shown, the cover being hinged for convenience to the carriage bed and latched by the detent e. Each tool H, is journaled in a tool holder H', which is provided with a threaded shank h, passing up through the carriage cover and keyed into a collar h. A gear I, threaded to feed the shank is secured 7o thereto and is turned by the worm J, which is mounted on a shaft J provided with a handle J2. The shaft is journaled in boxesj attached to the part G of the carriage cover. The gears I, may be turned by operating the handle J2. The shank h, of the tool holder is prevented from rotating by the collar h', to which it is keyed, and the set screw 71,2 which bears upon this collar. Any rotation of the gear Lwill feed the tool either in or So out of the sleeve D. By loosening theset screw h2 and turning the shank of the tool holder in either direction, the angle of the axis of the tool relatively to the axis of the tube may be varied.

The set screw h2 may be tightened to hold the tool holder in its adjusted position.

The corrugating tool proper is of general cylindrical form, and is provided with a spiral corrugation extending two or more times 9o around it of `a pitch, say of four threads to the inch. A spiral rib of two or more complete turns and of uniform diameter or radius is thus formed on the cylinder and elects the corrugaton of the tube as hereinafter explained. By setting a tool of this kind with its axis at a proper angle to the axis of the tube to be,corrugated,aspiral thread is made as indicated in Fig. 4c. If the thread of the tool be right-handed and the tool be set in loo such manner that the line or lines of contact between the tool and the tube are at right angles, to the axis of the tool, or in other words, set in such manner that the axis of the tool is at a proper angle with the axis of the tube, annular corrugations will be formed in the tube, as indicated in Fig. 5. If the tool be turned from the position shown in Fig. 5, until its axis is at a greater angle to the axis of the tube than that shown, a lefthanded corrugation will be made. In each case there must never be less than two rm points of contact between the tool and the tube, as the regular feed of the carriage is necessary to the proper corrugation of the tube.

I claim as my invention- 1. A tube corrugating machine comprising holder for the tube to be corrugated, a corrugating roll havinga spirally arranged rib with two or more complete turns extending around its circumference, and a tool holder adjustable to vary the angle of the axis of the tool relatively to the axis of the tube, whereby either a continuous spiral corrugation or a series of separate and distinct annular corru- `gations may be formed in the tube.

2. A tube corrugating machine comprising a holder forthe tube to be corrugated, a corrugating roll having a spirally arranged rib with two or more complete turns extending around its circumference and extending around its diameter, and a tool holder adjustable to Vary the angle of the axis of the tool relatively to the axis of the tube and located in proximity to the tube holder, in which the corrugating roll has its bearings, all as set forth.

3. A tube corrugatng machine comprising a holder for the tube to be corrugated, a corrugating roll having a spirally arranged rib with two or more complete turns extending around its circumference and all of uniform diameter, and a tool holder comprising bearings for the corrugating roll, and a shank or pivot adapted to varythe angle of the axis of the tool to the angle of the axis of the tube carried by an arm adjustable toward and from the holder, all as set forth.

In testimony whereof I have hereunto subscribed my name this 13th day of October, A. D. 1891.

BIcKNELL HALL.

Witnesses:

GEORGE O. G. GoALn, EVA A. GUILD.

granted September 26, 1893, upon the `application of Bicknell Hall, of rJPaunton,

Massachusetts, for an improvement in "Gorrugating Machines,7 Was erroneously Written in the grant The Wainwright Manufacturing Company, Whereas said name should have been Written The Wainwright Manufacturing Company of Massachusetts;

and that the said Letters Patent should be read with this correction therein that the same may conforln to the record of the case in the Patent Office.

Signed, countersigned, and scaled this 3d. day of October7 A. D. 1893.

[SEAL] WM. H. SIMS, Firct Assistant Secretary of the Interior. (lountersigned S. T, FISHER,

" Acting Commissioner of Patents. 

